Device for opening and closing doors.



PATENTED OCT. 25, 1904.

J. P. GON-NELL.

DEVICE FOR OPENINGANDGLOSING DOORS.

APPLICATION FILED JUNE 19,1903.

2 SHEETS-SEEET 1.

NO MODEL.

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J. F. GONNBLL.

' DEVICE FOR OPENING AND CLOSING DOORS.

APPLICATION FILED JUNE 19,1903.

2 SHEETS-SHEET 2.

N0 MODEL.

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Attorney part plan corresponding to Fig. 1.

UNirap Sra ras Patented October 25, 1904.

PATENT @rrien.

DEVICE FOR OPENING AND CLOSING DOORS- SPECIFICATION forming part of Letters Patent No. 773,531, dated October 25, 1904.

Applicationfiled June 19, 1903.

To a 1071mm it may concern:

Be it known that I, J OHN FRANCIS CONNELL, of the city of Los Angeles, in the county of Los Angeles, in the State of California, have invented a new and useful Device for Opening and Closing Doors or Gates, (my said device being more especially applicable for opening and closing the doors of elevator-shafts and other inclosures.) of which the following is a full, clear, and exact description or specification, reference being had to the annexed drawings and to the letters marked thereon.

My said invention has for its object to operate with ease and practically without noise double doors or gates which are carried or suspended by rollers that is to say, upon a horizontal bar or bars, as the case may be.

Upon the annexed drawings, Figure 1 is in part an elevation of that part of an elevatorshaft or other inclosure wherein a double sliding door is used for opening or closing a doorway therein, the double sliding door being indicated in dotted lines and the whole of the device constituting my invention being shown in full lines, as are also shown some main parts of the elevator-shaft or inclosure, as well as the bars upon which the rollers of the doors are carried. Fig. 2 is an end elevation corresponding to Fig. 1. Fig. 3 is a Fig. 1 is another elevation corresponding to Fig. 1, but in which the double sliding doors are shown as drawn into the elevator-shaft or other inclosure and the doorway open for egress or ingress, as required, also showing the device constituting my invention in the upraised position corresponding with the opening of the door. I

In Figs. 1, 2, 3, and 4 of the annexed drawings the tubes A are constructive parts of the framing of the inclosure of an elevator-shaft such as is commonly used in buildings having several floors.-

My invention in the figures of the drawings is shown applied to the operating of two sliding doors or gates whose outlines are marked in dotted lines B and B. These doors or gates are provided with antifriction-rollers C C and C C, respectively, at the top of each, and these rollers suspend each door or gate B and Serial No. 162,218. (No model.)

B upon and from the horizontal carrying-bars D and D in the usual manner, and these bars D and D are at such distance from each other that the doors or gates B and B may be moved parallel to each other and into the opened or closed position, as shown at Figs. 1, 3, and 4. Upon one of the vertical edges of each door B and B there is attached a pivot-carrying block E or E. Upon the pivot a of the block E there is carried the pivotally-operating bar or lever F, and this bar or lever F is capable of being moved upon its pivot to through an angle of about a quadrant or quarter of a circle during the act of opening or closing the doors or gates B and B' that is to say, during the act of moving the doors or gates from the positions they are shown to occupy in Fig. 1 to the position they are shown as occupying in Fig. 4, or vice versa. The bar F is moved upon its pivot a from the horizontal position (shown at Figs. 1, 2, and 3) to the vertical position (shown at Fig. 4) by the attendant in the elevator-cage or elsewhere (according to the situation of the door or gateway whereat or whenever my said invention is applied) applying his finger to the lifter G at the outer end of the pivotal bar F, and as this movement continues to be imparted to the pivotal bar F, so the bar F and the links H and I, respectively and pivotally connected to the bar F by the respective pivots Z) and 0 do, by their combined action and by reason of the link I being also pivotally connected to the stifi spring J by the pivot (Z, which spring J is rigidlyfastened'to the tube A of the elevatorinclosure or to other fixed or stationary object, cause the doors or gates B and B, and simultaneously therewith the bar F and the links H and I, to be moved into the open position of the doors or gates and of the said pivotedlbar and links. (Shown at Fig. 4:.) When it is desired to move the doors or gatesB and B into the opposite or closed position, then the attendant applies hishand to the door or gate B, causing it to roll by its supportingrollers C C upon the bar D, which movement being imparted to the door B causes it to pull the link H, the pivoted bar F, and the link I gradually into the horizontal position, which these parts occupy when the doors or gates B and B are closed, as shown at Figs. 1, 2, and 3. The spring J by reason of its elasticity prevents a hard or unyielding blow of the doors or gates or of the moving parts of the device constituting my invention from taking place at the termination of the movements of the said doors and gates and moving parts in either directionthat is to say, at the completion of the opening or the closing of the said doors or gates while for the purpose of preventing a hard blow taking place at the instant when the outer end of the bar F reaches the horizontal position (shown at Figs. 1, 2, and 3) the face of the lifter Gr is provided with a pad of india-rubber K, which comes into contact with the upper edge of the link H. when the parts reach the horizontal position referred to.

I Having now particularly described and ascertained the nature of my said invention and the best system, mode, or manner I am at on said pivot, alink connected movably at one end to one arm of said lever, and at the opposite end to the other sliding door, another linkconnected movably at one end to the other arm of said lever, the opposite end of spring rigidly supported, all operating together in the manner and for the purposes substantially as set forth.

2. The combination of the double, sliding doors, the pivot on one of the sliding doors, the lever mounted on said pivot, the two links connecting the lever to the other sliding door and to the stilt spring respectively, the stiff spring and the rigid support of the stiif spring, substantially as hereinbefore described.

3. The combination of the double, sliding doors, the pivot on one of the sliding doors, the lever mounted on said pivot, the twolinks connecting the lever to the other sliding door and to the stiff spring respectively, the stifi spring and the rigid support of the stifl spring, the pad, substantially as hereinbefore described.

In testimony whereofI have hereunto set my 'hand and seal in the presence of two subscribsaid link being connected movably to a stiff 

